Stable Base of Support: The rear foot shows adequate stability on the rubber and the lead ankle plants without excessive eversion, providing a solid base to rebuild the kinetic chain from.
Functional Wrist & Follow-Through: Wrist position and pronation through the follow-through appear functional, so the correction work can stay focused on the lower half and trunk sequencing.
Soft Front Leg (Block Failure): The most critical disconnect. The bent lead knee absorbs energy instead of transferring it, destabilizing the entire kinetic chain and forcing the arm to compensate.
Premature Trunk Rotation & Arm Drag: The trunk opens too soon, limiting hip-to-shoulder separation and leaving the throwing hand behind the elbow at foot plant. This places significant valgus stress on the elbow — a well-documented precursor to UCL and shoulder injury.
Inefficient Deceleration: The follow-through falls off toward the first-base side, indicating poor core control and an inability to stabilize rotation around a firm lead leg, stressing the posterior shoulder.